Delsym is a brand of over-the-counter (OTC) cough relief products containing the active ingredient Dextromethorphan, an NMDA-receptor based cough suppressant. It is sometimes used recreationally for its dissociative and slightly psychedelic effects. It differs from other OTC cough relief products containing Dextromethorphan (usually as the hydrobromide salt) in using a time-release formula, Dextromethorphan polistirex, which provides relief for up to a claimed 12 hours.

I would like to make this occasion to provide a comment on what is currently the number one entry for Delsym, whether or not it gets published or voted up or whatever it is that gets done to things on this stupid website:

why is this shitload of misinformation the #1 entry? most maximum strength cough syrups have roughly 354mg of DXM in them, including Delsym 12. it has 30mg per 5mL volume, and a typical bottle is 4–6 fl oz (6 fl oz -> 177mL).

Delsym 12 is very arguably the "best" syrup to get "fucked up on." it is actually a time-release formula which may or not be preferable depending upon your intentions. it may be conducive to a longer "trip," but in some this is not desired, and it also may reduce the overall intensity of the effects, as a trade-off.

there is no difference in ingredients between ANY bottle of Delsym—the only difference is in volume and dosage information. all Delsym 12 products contain, in 5m...

the best cough syrup to get fucked up on. It has 30 mg of DXM in it. It is very different from all other cough medicines, it is like using an actual drug. There are "big bottles" and "small bottles"... the big bottle is more of a fucked up, some people describe it as "tripping". the small bottle is more of an uppity fucked up. It gives you the feeling that everything is perfect. It might hurt your tummy a little bit, but just ignore it... and whatever you do TRY YOUR HARDEST NOT TO PUKE. To some people it is very addictive. It can be compared to a fucked up like PCP would give you, it might also test positive as PCP on a drug test. Whatever you do though, do a small bottle for your first time or you will get way too fucked up and not be able to handle it. Also, DO NOT EAT for atleast 6 hours before drinking it and then eat as much as you want afterwards.(if you eat right before drinking it, it will take a lot longer to kick in, and might not even kick in at all). Smoking weed is the best thing for this drug, but dont smoke too much or you will be "duhhh..." Also, while you are on it, any other drug affects you way more than it normally would, you need about half the normal amount of alcohol to get drunk, and dont need to smoke that much weed at all. Its so great. You also might need somebody sober with you to watch you and keep you out of trouble, this person would be called your "babytripper," but whatever you do... have fun!

Commonly abused cough medicine. Chosen for the large concentration of DXM polisterex in each dosage. DXM polisterex is a longer lasting form of DXM HBr which is found in most OTC cough medicines. Because of its longer lasting nature, recreational use may result in a daze that lasts from 24 hours to up to three days.
Known as "Agent Orange" for its orange color. Also known as "Company D" in an illusion to the down syndrome dance group that shares the same name, because of the strange way which one moves when abusing Delsym.

A cough medicine which will fuck you up.. you think acid and other drugs are they shit.. im takin it you havent tried DELSYM. Delsym makes you see crazy things and you WILL have Bizzare sensations. This drug is VERY addicting. This will be the biggest trip of your life. Its UNEXPLAINABLE!!! everything you do when you are on delsym seems perfect. Nothing goes wrong. I LOVE DELSYM!

The best cough medication in the world, I say this because it is the only U.S. cought syrup that contains nothing but DXM (dextromethorphan) I like to drink about 8 ounces of delsym.
also it is slow release so you are fucked up longer, but need more milligrams of dxm.